For a person younger than 30 years old, who will likely live another 50 years, the world's climate will certainly change. at the current levels of deforestation and fossil fuel consumption,

Higher global temperatures, higher sea levels, and less species biodiversity

Explanation:

The younger person might see consequences related to global warming. This might result as a increase in the temperature. The increase in temperature can lead to increase in the sea levels.

The higher temperature might also kill some of the species that is beneficial for the earth.

The plants and animals will die out of higher temperatures and this will increase more and more due to human interventions.

who knows

explanation:

a chair, a bed, and a toothbrush

explanation: